Circulatory system3

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Across
  1. 1. protecting body from germs
  2. 6. clotting of blood
  3. 9. liquid part of the blood
  4. 11. valve present between left auricle and left ventricle
  5. 12. lower chambers of the heart
  6. 13. blood vessel that carries blood back to heart
Down
  1. 2. very thin blood vessels
  2. 3. transporting nutrients and oxygen
  3. 4. rhythmical throbbing of arteries
  4. 5. upper chambers of the heart
  5. 7. valve present between right auricle and right ventricle
  6. 8. fluid connective tissue that flows in blood vessels
  7. 10. blood vessel that carries blood away from the heart